A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6320-00-110-8005
NSN 5915-01-435-5275
NSN 5950-00-138-5227
NSN 6220-01-034-1231
NSN 6645-01-295-9995
NSN 6620-01-408-4464
NSN 2925-01-239-6044
NSN 6220-01-359-5983
NSN 6685-01-149-6494
NSN 5985-01-058-8036
NSN 6685-01-272-9452
NSN 4140-01-234-9999